Indoor Garden

Hi everybody.
Due to the hours I've worked for... well forever! I've been unable to look after a garden apart from cutting the grass and one summer of growing veg in a small poly tunnel. Now I'm able to look after my garden and much more.
My boss has built an Anaerobic Digestion plant on the farm. It's all too fancy for me but you feed it silage and it feeds the electricity grid! For the plant to run efficiently, it needs to create more electricity than the grid requires. So there's electric going spare. The excess is going to 2 blow heaters in an old cattle shed, where we have sectioned off roughly 25m x 6m for an indoor garden.
My boss has asked me to experiment with it and see what we can grow and nervously I said yes. I'm actually looking forward to it now but I've got a lot to learn in a short space of time. Would anybody on this forum be able to give me any advice or any links to help me with this project? Or if you have any queries yourself, please ask.
Thanks,
Alan.